view.html.erb

<script>
  document.cookie = "csrf-token=<%= csrf_token %>; path=/rnode/<%= host %>/<%= port %>; secure";
</script>
<form action="/rnode/<%= host %>/<%= port %>/auth-do-sign-in" method="post" target="_blank">
  <input type="hidden" name="username" value="<%= ENV["USER"] %>">
  <input type="hidden" name="password" value="<%= password %>">
  <input type="hidden" name="staySignedIn" value="1">
  <input type="hidden" name="appUri" value="">
  <input type="hidden" name="csrf-token" value="<%= csrf_token %>"/>
  <button class="btn btn-primary" type="submit">
    <i class="fa fa-registered"></i> Connect to RStudio Server
  </button>
</form>